Russian strongman Vladimir Putin ordered up a dossier on President Trump’s psychological makeup to help him prepare for their first sitdown, a new report said Monday.

Its conclusions so far peg the president as someone not afraid to take risks but who can also be naive about people and issues he doesn’t understand, NBC News reported.

Trump “doesn’t understand fully who is Mr. Putin — he is a tough guy,” former Deputy Foreign Minister Andrei Fedorov told the network.

The file was being put together by retired diplomats and some of Putin’s staffers, he said.

“Very serious preparatory work is going on in the Kremlin, including a paper — seven pages — describing a psychological portrait of Trump, especially based on this last two to three months, and the last weeks,” added Fedorov, who said he had known Trump since the turn of the century.

Putin, according to the report, wants to know what makes Trump tick before their first face-to-face meeting, the date of which has not been set.

During a recent phone call, Trump trashed a treaty that capped the number of nuclear warheads each country could deploy — a deal Secretary of State Rex Tillerson said he supported during a Senate confirmation hearing.

Federov said in his opinion Trump should not withdraw into a bubble with his closest aides — such as his son-in-law Jared Kushner and senior adviser State Bannon — and instead seek the advice of more experienced government hands.

“Trump is not living in a box — he is living in a crowd. He should listen to the people around him especially in the areas where he is weak,” he told NBC.

“Trump cannot come to a meeting with Putin as a loser — he must sort out his domestic problems first.”

While world leaders usually get briefed on a new president, those briefings generally don’t include psychological profiles.

The Kremlin has watched Trump’s behavior with alarm, according to Fedorov and Sergei Markov, a former Russian lawmaker who remains well-connected with Putin’s government.

Russia worries that Trump won’t be able to follow through on his pledge to forge a stronger bond with Russia because of political opposition at home.

Team Trump has come under scrutiny over what some critics say is a too-rosy relationship with Russia.

He fired national security adviser Mike Flynn after Flynn talked with Russia’s ambassador about sanctions imposed in December by President Obama over Russian meddling in the US election.

Russia “is now a kind of banana skin for Trump — that’s why we should avoid any kind of step that could damage Trump,” Fedorov said.

He added that Trump’s “constant battle with the mass media” — whom he has called “the enemy of the American people” — was “worrying us.”

And a former prime minister under Putin told the network the Kremlin was not amused by Trump’s foibles during the first month of his presidency.

“Absolutely not — not laughing,” Mikhail Kasyanov said. “The situation is very serious and the whole of [Putin’s] team, they are nervous.”